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Fibrillation of hen egg white lysozyme triggers reduction of copper(II).

Abstract：

:Copper is known to exert diverse effects on the self-association of proteins and has been found in amyloid deposits that are involved in neurodegenerative disease processes. The effects of the metal ion on the protein during fibrillation were investigated by fluorescence, circular dichroism spectroscopy and fluorescence microscopy. We report for the first time, the complete reduction of Cu(II)→Cu(I) in vitro during fibrillation of hen egg white lysozyme at pH 7. This was confirmed by the lack of any signal for Cu(II) in electron paramagnetic resonance spectroscopy and quantification of Cu(I) was achieved by a bathocuproine disulfonate based assay.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Ghosh S,Pandey NK,Bhattacharya S,Roy A,Dasgupta S

doi

10.1016/j.ijbiomac.2012.04.024

subject

Has Abstract

pub_date

2012-07-01 00:00:00

pages

1-6

issue

1-2

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(12)00155-9

journal_volume

51

pub_type

杂志文章

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